Some of that will depend on how much you structure the page for bots (not just scrapers) - if the availability info is exposed via json-ld, I would expect every

Some of that will depend on how much you structure the page for bots (not just scrapers) - if the availability info is exposed via json-ld, I would expect everyone to consume changes just fine. Note that changing from "lawn chair" (phrase humans actually use and search for) to "chair for your lawn" (phrase which is unlikely to ever be used by anyone) is not an SEO boost...